US3785045A - Method of casting and subsequently deburring of workpieces and a device for carrying out the method - Google Patents

Method of casting and subsequently deburring of workpieces and a device for carrying out the method Download PDF

Info

Publication number
US3785045A
US3785045A US00248051A US3785045DA US3785045A US 3785045 A US3785045 A US 3785045A US 00248051 A US00248051 A US 00248051A US 3785045D A US3785045D A US 3785045DA US 3785045 A US3785045 A US 3785045A
Authority
US
United States
Prior art keywords
casting
pattern
deburring
machine
castings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00248051A
Other languages
English (en)
Inventor
W Reis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19712124142 external-priority patent/DE2124142C/de
Priority claimed from DE19722201353 external-priority patent/DE2201353C3/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3785045A publication Critical patent/US3785045A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2076—Cutting-off equipment for sprues or ingates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2084—Manipulating or transferring devices for evacuating cast pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49989—Followed by cutting or removing material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5182—Flash remover

Definitions

  • ABSTRACT A method of producing castings and subsequently deburring and also machining the castings if necessary.
  • the castings are removed from a casting machine while still in a hot state and conveyed by a grip-per assembly'to' a deburring machine.
  • This' machine includes a pattern device into whichthe hot' casting is placed. The device is slowly closed as the casting cools thereby shrinking the casting upon. the pattern. As a result, appreciable deformation of the casting is effectively prevented.
  • the casting is substantially cooled and has thus reached its final configuration it is deburred in the deburring machine and if necessary surface finished.
  • the present invention relates to a method of casting and deburring workpieces, and particularly to a method of casting and deburring workpieces in an automated operation.
  • the invention further relates to a device for casting and deburring workpieces.
  • Dipping of castings, especially aluminum alloy castings into a coolant tends to cause a surface hardening of the castings. This is undesirable as in most instances a subsequent machining is necessary such as stamping, milling, drilling, threading, etc. Obviously, hardening of the surface increases the required machining time.
  • An installation according to the invention comprises a preferably horizontally arranged deburring machineand a gripping and conveying assembly.
  • the deburring or flashing machine with reference to the extrusion casting machine for supplying castings to the deburring machine can be selected as convenient by a suitably arranged movement of gripper arms of the gripping means.
  • the casting machine and the deburring machine can be placed in relative positions which are most suitable for the specific conditions involved.
  • a particularly suitable and convenient arrangement is a position which permits placement of the working spaces in the casting machine and the deburring machine side-by-side and parallel to the discharge directions of both machines.
  • a casting removed from the casting machine is immediately and without interruption conveyed to the working space in the deburring machine.
  • the manner in which such immediate conveyance is effected is usually not critical.
  • gripping assemblies may be used which are mounted posterior of the deburring machine and can be inserted through the opened deburring machine into the also opened casting machine and withdrawn in the same manner.
  • an overhead conveyor which removes castings by suitably disposed gripper means and then inserts such castings into the deburring machine. It is essential that the hot castings are now placed into a tool which is not designed for hot working but for cold working such as working at room temperature.
  • a very important advantage of the invention resides in that maintenance of close tolerances is possible and that the deburring or flashing tools do not have to be specially designed since the castings can be machined to the desired true dimensions at room temperture.
  • the shrinking processes of the castings are not completed due to the elevated temperature which the casting has immediately after removal from the casting machine (generally in practice between to 400C). Insertion of such hot castings into a machining in the deburring machine is not practical.
  • conical pins or otherwise shaped locating elements are provided on the casting if not already present to permit convenient preliminary centering of the casting. After insertion of the hot and thus still over-dimensioned casting into the device for preliminary centering the same, the deburring machine is closed to an extent such that the casting can be pressed by means of suitable counter holders into its preliminarily centered position.
  • cooling of the casting begins.
  • the cooling can be effected by natural heat dissipation or it can be assisted by suitable blowers. In special cases, forced cooling by use of liquid coolant is also suitable.
  • Such cooling is effected while the gripping means are again moved into a ready position for accepting the next casting.
  • the deburring machine can be further closed and the casting, depending upon the shrinking process, can be pressed into a working space of a machining tool.
  • the counter-holding force must be adjusted in accordance with the requirements. Such adjustment can be effected by continually or step-wise slowly closing the deburring machine or by a preselected increase in the closing pressure.
  • the deburring machine is opened; the casting and all waste material are removed and the deburring machine is now ready for machining the next casting.
  • the closing of the pattern means the positioning of the locating means and the cooling process can be simultaneously accelerated by the use of suitable coolants which may be liquid or gaseous. With such accelerated cycle it is essential to provide for the deburring or flashing steps and sometimes also for the finishing operations a suitable selection of materials and corresponding construction methods.
  • the cooling progress can be so controlled that, for instance, inlet spouts of substantial crosssectional area for the casting material and tap spouts need not to be forcibly cooled.
  • An immediate return of still hot metal waste into the melting furnace is quite possible thereby reducing the required energy output.
  • Forced cooling by using of liquid coolants can be so controlled that the residual heat of the castings and other parts effects evaporation of the coolant.
  • the holders for the finishing or cutting tools and available surfaces are utilized as heat exchangers.
  • provisions must be made for an efficient dissipation of the heat, for instance by providing suitably placed ducts or channels through which a suitable coolant is directed.
  • FIG. 1 is a sectional side view ofa casting and deburring installation according to the invention taken on line 1-1 of FIG. 2;
  • FIG. 2 is a sectional edge view of the installation of FIG. 1 taken on line 22 of FIG. 1;
  • FIG. 3 is a sectional side view of a modification of the installation taken on line 33 of FIG. 4;
  • FIG. 4 is a sectional edge view of FIG. 3 taken on line 4-4 of FIG. 3;
  • FIG. 5 shows schematically and partly in section a deburring device according to the invention, the left side of the figure showing the device in a first lowered position and the right side in a fully closed position;
  • FIG. 6 is a detail of FIG. 5 on a larger scale.
  • FIG. 7 is a side view of a machining tool to be used in conjunction with the deburring device of FIG. 5.
  • FIG. 1 shows diagrammatically a horizontally disposed generally conventional casting machine 1 which may be an extrusion casting machine, an injjection casting machine, etc.
  • the mounting guides of the madeburring maching 2 mounts on the guides 3 connected with it on conveying and gripping means 4 which carries at its ends suitable grippers 5.
  • the gripper means are controlled from a suitable control device (such as control device 19 of FIG. 3) so that the grippers 5 can be opened and closed and that the gripper means is movable in the direction of the arrows 6 and also in the direction of the arrows 7 as a unit.
  • the gripper means 4 serves to lift a casting out of the casting machine 1 and to insert it slowly into a hereinafter further described tool of the deburring machine 2.
  • the conveying and gripping means 14 are not shown as in the previous embodiment at about the mid-level of the casting machine and the deburring machine but above the top level of the same.
  • the casting machine 11 is merely indicated by components adjacent to its mold II.
  • a deburring machine 12 operating in a generally conventional manner is disposed parallel with the casting machine.
  • a guide rail 13 is fixedly secured on the deburring machine 12 and a conveying and gripping means is guided on guide rails 13.
  • the gripping means comprise a carrier or slide arrangement 14, 14' with a built-in drive means.
  • the slide 14 is movable in the direction of arrow 16 and the support arm of the gripper is slidable in the direction of the arrow 17. Further support rails 13a are movable in the direction of arrow 18.
  • the gripper can be opened and closed.
  • the afore-referred to movements are controlled by a control device 19 via a control conduit 20.
  • This control device is connected with the deburring machine.
  • the casting machine is connected to the control device 19 via a control conduit 21.
  • the deburring machine is also controlled as to its working cycle by this control device.
  • the control device 19 should be visualized as a conventional device; many suitable types of control devices are well known in the art. It may be a servo-motor system, an electrical switching system or an electronic system. As it is evident, there must be available two operations for each function, such as opening or closing of a gripper. Buttons for activating the device are indicated at 190.
  • the gripping means take a completed but still hot casting out of the casting machine and insert it into the deburring machine for cooling and subsequent deburring.
  • the existing control device and the guide rails for the gripping means are further used to guide and control a finishing device.
  • the finishing device comprises a slide assembly 24, 241', corresponding to the slide or carrier assembly 14, 14' with guide rails 24a and 25 which are movable in the directions of arrows 16, 17 and 18.
  • the guide rail 25 mounts a nozzle arrangement 26 which via a conduit 27 is supplied with a finishing agent such as a lubricant.
  • the control of slide 24 or 24 and the afore-indicated movements is effected automatically via a conduit 27 by control device 19 in the sequence of the working operations of the shown coupling of the machines.
  • the casting machine and the deburring machine do not have to be arranged as shown in the horizontal position.
  • the invention is, of course, also applicable to upright disposed machines.
  • a casting is designated by 120, a lower pattern half by 121 and an upper pattern half by 122.
  • Each of these two pattern halves are parts of a pattern which has a lower half 123 and an upper half 124.
  • the two halves of the pattern are preferably held in position by springs 125, or can be controllably driven by suitable pistons 126 acting upon the pattern.
  • the pattern further comprises holder pins 127 and 128 for holding therebetween the casting by engaging burrs 29 thereon.
  • Holders 127 and 128 also serve for centering the casting by means of recesses 30 engageable with noses 33 on burrs 29.
  • the holders may be spring-loaded relative to the casting as it is indicated by' springs 31, or they may be provided with separate drive pistons 32.
  • Recesses 30 are so disposed that the noses 33 can just enter the recesses when the casting is still hot and thus expanded, and that when the pattern half 122 is finally settled upon the casting the same is clamped with a close fit between pattern halves 121 and 122. Deburring can now proceed in a conventional manner.
  • the deburring machine can be provided with cooling ducts 40.
  • a cooling device 41 for spraying a coolant or a device 42 for directing steam upon the casting can be provided.
  • the deburring machine can additionally be provided with machining devices such as, for instance, a milling tool 43 which is controlled by a drive piston 44 and serves to mill out an opening 45 in workpiece 20 to the desired dimensions.
  • a milling tool 43 which is controlled by a drive piston 44 and serves to mill out an opening 45 in workpiece 20 to the desired dimensions.
  • the pattern half122 must be lifted before opening 45 can be milled.
  • Gripper 5 or 15' moves the casting 120 into the open pattern means shown in FIG. 5 and holds it tight in this means.
  • the holder pins 127 and 128 move into the position shown on the left half of FIG. 5.
  • Pattern halves 121 and 122 move into the positions shown on the left half of FIG. 5.
  • the pattern halves 121 and 122 are moved slowly and with little pressure into engagement with casting 120.
  • the holders 127 and 128 are moved into the position shown on the right half of FIG. 5 while the casting is cooling and shrinking.
  • pattern halves 121 and 122 are moved toward each other under heavy pressure thereby exerting corresponding pressure against the casting thus forcing the same into its final shape.
  • the deburring or flashing member 124 is now low- I ered and cuts off the overhanging burrs 29 on the casting.
  • Pattern halves 121 and 122 are again reopened and holders 127 and 128 are withdrawn.
  • the finished casting now drops downwardly out of the deburring machine.
  • a method of producing finished castings in continuous operation comprising the steps of:
  • a device for producing finished castings in continuous operation comprising:
  • a casting machine for casting therein a casting of predetermined configuration and a deburring machine for truing and deburring therein a casting cast in the casting machine fixedly coupled to each other, said casting machine including means for closing and opening said machine for removing therefrom a casting and said deburring machine including pattern means including two parts movable relative to each other for placing a casting therebetween, means for opening the pattern means for inserting thereinto a casting removed from the casting machine and means for pressure closing the pattern means, said pressure closing pressing the casting into conformity with the contours of the pattern parts thereby truing the casting to said predetermined configuration and also locking the casting in position;
  • conveying means including gripping means for removing castings from the casting machine and delivering the same between the parts of the pattern means;
  • cycling control means sequentially actuating the opening and closing means of the casting machine for opening the conveying means for withdrawing, one by one, castings while still hot from the casting machine and delivering the same to the pattern means, actuating the opening and closing means of the pattern means for first opening and then slowly pressure closing the pattern means to conform the casting to the pattern means as the casting cools, actuating the deburring means, and actuating the opening and closing means of the pattern means for reopening said means.
  • deburring means comprise cushioning holder means for holding the casting in position while being deburred.
  • said conveying means comprise guide means for guiding the castings as they are being delivered from the casting machine to the deburring machine under the control of said control means, and further comprising machining means also controlled by said control means for machining castings after having been deburred by the deburring means.
  • each casting when withdrawn from the casting machine comprises a laterally protruding burr, each of said burrs being dimensioned to block movement of the two parts of the pattern means into the closed position while and when the expansion of a casting due to the casting heat is above a predetermined limit and to release the pattern parts for movement into the closed position in response to shrinking of the casting below said limit due to cooling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
US00248051A 1971-05-14 1972-04-27 Method of casting and subsequently deburring of workpieces and a device for carrying out the method Expired - Lifetime US3785045A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712124142 DE2124142C (de) 1971-05-14 Vorrichtung zum Gießen und an scbliessenden Abgraten von Werkstucken
DE19722201353 DE2201353C3 (de) 1972-01-12 1972-01-12 Vorrichtung zum Gießen und anschließendem Abgraten

Publications (1)

Publication Number Publication Date
US3785045A true US3785045A (en) 1974-01-15

Family

ID=25761132

Family Applications (1)

Application Number Title Priority Date Filing Date
US00248051A Expired - Lifetime US3785045A (en) 1971-05-14 1972-04-27 Method of casting and subsequently deburring of workpieces and a device for carrying out the method

Country Status (5)

Country Link
US (1) US3785045A (show.php)
CH (1) CH540732A (show.php)
FR (1) FR2137470B1 (show.php)
GB (1) GB1386296A (show.php)
IT (1) IT955350B (show.php)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494297A (en) * 1981-10-06 1985-01-22 Asea Aktiebolag Method of producing castings with means to facilitate burr removal
US4665785A (en) * 1984-10-26 1987-05-19 Bayrisches Druckgusswerk Thurner Gmbh & Co. Trim press
US6742253B2 (en) 2001-06-29 2004-06-01 Gkn Sinter Metals Process for eliminating vertical flash on an as-forged connecting rod
CN120023650A (zh) * 2025-04-16 2025-05-23 山东鲁电线路器材有限公司 一种铝合金液态模锻加工用切割装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5932446Y2 (ja) * 1978-11-25 1984-09-11 阪神工機株式会社 ダイカスト製品のためのトリミング装置
JPS5674360A (en) * 1979-11-24 1981-06-19 Hanshin Koki Kk Moving method of molding in production process
JPS5844911Y2 (ja) * 1979-12-21 1983-10-12 阪神工機株式会社 スプレ−装置を含むダイカスト成形ラインを形成す成形装置
CN111843378A (zh) * 2019-04-30 2020-10-30 华孚精密科技(马鞍山)有限公司 一种金属件加工方法及金属件
CN111906496A (zh) * 2019-05-08 2020-11-10 华孚精密科技(马鞍山)有限公司 一种压铸件制造方法及压铸件
CN111842836B (zh) * 2020-07-24 2021-11-23 东莞市友美科技有限公司 一种压铸模具和压铸成型方法
CN112276031B (zh) * 2020-10-10 2022-03-15 深圳市铭利达精密技术股份有限公司 一种汽车关键零部件自动化压铸岛及在线监测装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1077709A (en) * 1912-01-20 1913-11-04 Alonzo L Hastings Process for constructing bolster.
US1955367A (en) * 1931-10-17 1934-04-17 Cardwell Westinghouse Co Method of sizing and surfacing draft gear housings
US3066401A (en) * 1959-02-10 1962-12-04 Pechiney Prod Chimiques Sa Manufacture of splined ingots
US3445904A (en) * 1966-10-06 1969-05-27 North American Rockwell Apparatus for making forgings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1077709A (en) * 1912-01-20 1913-11-04 Alonzo L Hastings Process for constructing bolster.
US1955367A (en) * 1931-10-17 1934-04-17 Cardwell Westinghouse Co Method of sizing and surfacing draft gear housings
US3066401A (en) * 1959-02-10 1962-12-04 Pechiney Prod Chimiques Sa Manufacture of splined ingots
US3445904A (en) * 1966-10-06 1969-05-27 North American Rockwell Apparatus for making forgings

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494297A (en) * 1981-10-06 1985-01-22 Asea Aktiebolag Method of producing castings with means to facilitate burr removal
US4665785A (en) * 1984-10-26 1987-05-19 Bayrisches Druckgusswerk Thurner Gmbh & Co. Trim press
US6742253B2 (en) 2001-06-29 2004-06-01 Gkn Sinter Metals Process for eliminating vertical flash on an as-forged connecting rod
CN120023650A (zh) * 2025-04-16 2025-05-23 山东鲁电线路器材有限公司 一种铝合金液态模锻加工用切割装置

Also Published As

Publication number Publication date
GB1386296A (en) 1975-03-05
CH540732A (de) 1973-08-31
FR2137470A1 (show.php) 1972-12-29
IT955350B (it) 1973-09-29
FR2137470B1 (show.php) 1977-07-22

Similar Documents

Publication Publication Date Title
US3785045A (en) Method of casting and subsequently deburring of workpieces and a device for carrying out the method
US6857462B2 (en) High pressure die cast process
US7900543B2 (en) Punch press, method of replacing punch and die for punch press, and punch system
CN102066069B (zh) 工业制品生产设备和生产方法
CN117300693A (zh) 一种便于连续加工的立式数控钻床及其加工方法
CN110523816B (zh) 一种高频退火弯管机
CN116786740B (zh) 一种铝合金锻件自动化生产线
US4673022A (en) Arrangement for the changing of implements in foundry machines
JPH09314318A (ja) 金型移動式連続重力鋳造ライン設備
JP2002102985A (ja) 鍛造プレス機のスプレーブロー装置
CN210160720U (zh) 一种全自动打横孔去毛刺设备
JP4257955B2 (ja) ダイカスト装置及びダイカスト装置の金型交換方法
CN223699237U (zh) 一种纵置射蜡机
CN221603226U (zh) 一种换热均匀的新能源汽车压铸模具
CN221967337U (zh) 一种用于大型铸件的多功能去毛刺打磨单元
CN223325415U (zh) 一种自动取芯的自动线
CN219335601U (zh) 一种模具定位装置
CN218534785U (zh) 一种夹钳斜油道孔双工位钻削专用工装
CN222767282U (zh) 一种低压铸造成的多腔控制臂
CN223603863U (zh) 一种首饰加工机
CN221018644U (zh) 中冷器气室铸造生产用浇铸机
CN219632651U (zh) 一种压铸件加工用钻孔装置
CN220660387U (zh) 一种导轨的抛光装置
CN219152259U (zh) 金属装饰配件模具生产的数控机床送料机构
US7250133B2 (en) Device for use when hardening